import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rules from '../components/power/Rules.vue'
import Rights from '../components/power/Rights.vue'
import Categories from '../components/goods/Categories.vue'

Vue.use(Router)
const router = new Router({
  routes: [
    {
      path: '/',
      redirect: '/login'
    },
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      redirect: '/welcome',
      component: Home,
      children: [{
        path: '/welcome',
        component: Welcome
      }, {
        path: '/users',
        component: Users
      }, {
        path: '/roles',
        component: Rules
      }, {
        path: '/rights',
        component: Rights
      }, {
        path: '/categories',
        component: Categories
      }]
    }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  // next()放行 next('/login') 强制跳转
  if (to.path === '/login') return next()
  // 获取token
  if (!window.sessionStorage.getItem('token')) return next('/login')
  next()
})

export default router
